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(3) Heavy computations. Generally, it is very tricky and costly to training sophisticated GANs with large image sizes [1]}. And the inpainting performance may be degraded on High-Resolution (HR) images. For example, it takes 2 weeks of training LaMa [2]} from the scratch on 256\(\times \) 256 Places2 with 3 V100 16 GB GPUs for a total of 0.8 million steps. blackThus it will take much more computational resources and time to train LaMa [2]} on \(512\times 512\)  Place2 dataset.
